[gstreamer-bugs] [Bug 636294] New: [pulsesink] Introduces artefacts into sound ("scratchy" playback)

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=636294
  GStreamer | gst-plugins-good | 0.10.26

           Summary: [pulsesink] Introduces artefacts into sound
                    ("scratchy" playback)
    Classification: Desktop
           Product: GStreamer
           Version: 0.10.26
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: gnome at colin.guthr.ie
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


Hi,

Compare the output of the following two audio pipelines:
 gst-launch-0.10 neonhttpsrc location=http://colin.guthr.ie/bong.ogg !
decodebin ! audioconvert ! pulsesink
vs.
 gst-launch-0.10 neonhttpsrc location=http://colin.guthr.ie/bong.ogg !
decodebin ! audioconvert ! alsasink


Both pipelines ultimately go via PulseAudio (as alsa is configured to go via
alsa-pulse plugin), but the former (pulsesink) pipeline produces identifiably
worse audio even on small samples like the above.

It's most noticeable at the start of the playback.

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